CN105081157A - Flange-free forging method of heavy-duty car balance shaft - Google Patents
Flange-free forging method of heavy-duty car balance shaft Download PDFInfo
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- CN105081157A CN105081157A CN201510488798.3A CN201510488798A CN105081157A CN 105081157 A CN105081157 A CN 105081157A CN 201510488798 A CN201510488798 A CN 201510488798A CN 105081157 A CN105081157 A CN 105081157A
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Abstract
The invention provides a flange-free forging method of a heavy-duty car balance shaft to achieve flange-free forging and reduce material cost and production cost. A special forging device is adopted. The method comprises the following specific steps that firstly, the pre-forging technology is carried out, a heated round bar is placed in a pre-forging lower mold cavity, and after a pre-forging upper mold and a pre-forging lower mold are assembled, mold locking is carried out through wedge block mold locking mechanisms; then, a left upsetting extrusion core bar and a right upsetting extrusion core bar are driven by a left electric spiral mechanism and a right electric spiral mechanism to exert force towards the inner side of the mold cavity, the closed upsetting extrusion is carried out on blank materials, blank pre-forging is finished, and a pre-forging piece is formed; and secondly, the finish forging technology is adopted, the pre-forging piece is placed in a finish forging lower mold cavity, after a special forging device sliding block drives a finish forging upper mold and a finish forging lower mold to be assembled, the wedge block mold locking mechanisms carry out mold locking, then, the left electric spiral mechanism and the right electric spiral mechanism drive a left extrusion head and a right extrusion head to exert pressure towards the inner sides of the molds, the mold cavity is filled with the blank materials in the blank middle groove extruding process, and the flange-free heavy-duty car balance shaft blank is obtained.
Description
Technical field
The present invention is a kind of forging method of balance shaft of heavy truck, specifically a kind of non-trimming forging method of balance shaft of heavy truck.
Background technology
Balance shaft of heavy truck is one of critical piece on balancing suspension system of heavy-duty car.Balance shaft of heavy truck forging process as shown in Figure 1: by the balance shaft of heavy truck blocking patrix be arranged on very large-tonnage forging press slide block under forging press dynamic action vertically downward, pressure is applied to larger diameter circle blank after the heating be placed on balance shaft of heavy truck blocking counterdie, after blocking patrix and blocking counterdie close, obtains pre-forging; Again pre-forging is put on finish-forging counterdie and on finisher, obtains the balance shaft of heavy truck blank with very large overlap by above step again, then obtain balance shaft of heavy truck blank after edger trimming.This balance shaft of heavy truck blank forging method, be difficult to meet the requirement of forging industry energy conservation and lowering consumption, reducing costs, raise the efficiency, there is a following difficult problem anxious to be resolved: because blank deadweight is heavier and profile is larger need produce with large tonnage forging press, cause equipment investment fund and power consumption is all very large; In order to ensure that thicker position, blank local can be full of, selected the round blank of thicker diameter, after forging, overlap is very large, just causes stock utilization lower; In order to prevent trimming to be out of shape, the allowance of Blank Design is comparatively large, just makes later stage finished product working (machining) efficiency lower.
Summary of the invention
In order to overcome present balance shaft of heavy truck rough forging many weak points in process of production, save equipment investment and energy consumption, realize non-trimming forging, reduce material cost and production cost, the present invention proposes a kind of non-trimming forging method of balance shaft of heavy truck.
Technical scheme of the present invention is: a kind of non-trimming forging method of balance shaft of heavy truck, it is characterized in that: the structure of the special forging equipment related to is: comprise left column, right column, upper beam, underbeam, slide block, main hydraulic cylinder, bottom knockout hydraulic cylinder, left column, right column, upper beam, underbeam form frame, slide block is led on left column, right column by guiding pair, main hydraulic cylinder is arranged on upper beam, and main hydraulic cylinder drives slide block; Bottom knockout hydraulic cylinder is arranged on below underbeam;
Left column, right column are separately installed with left electric screw mechanism, right electric screw mechanism; The structure of left electric screw mechanism, right electric screw mechanism is identical, concrete structure is: give flywheel through one-level gear power transmission by two motors, give screw pair power transmission again by flywheel, then give slide block by screw pair power transmission, thus realize Power output;
Voussoir, right fixing voussoir are fixed in the left side that is respectively equipped with above of slide block; Be provided with voussoir clamping mechanism below upper beam, voussoir clamping mechanism comprises left voussoir clamping mechanism, right voussoir clamping mechanism, and left voussoir clamping mechanism is made up of left side small cylinder, left movable wedge, and left side small cylinder drives left movable wedge; Right voussoir clamping mechanism is by right side small cylinder; Right movable wedge composition, right side small cylinder drives right movable wedge; The upper surface of left movable wedge, the upper surface of right movable wedge are slidably matched with the lower surface of upper beam respectively;
During use, slide block moves down and puts in place, voussoir clamping mechanism locking sliding block, the tension force produced when overcoming forging and stamping; Left electric screw mechanism, right electric screw mechanism, laterally realize crushing failure at high speed forging;
The concrete steps of non-trimming forging are as follows:
1). pre-forging process: the round bar of heating is put into blocking counterdie die cavity, special forging equipment slide block drives pre-forging mold to move fast and counterdie carries out press-bending and matched moulds, and after matched moulds, voussoir clamping mechanism carries out locked mode; Then left and right two electric screw mechanisms drive left jumping-up to extrude plug, right jumping-up extruding plug applies to carry out closed jumping-up towards the power inside die cavity to blank and extruded blank blocking, form pre-forging, then two electric screw mechanisms drive two jumping-up plug returns, voussoir clamping mechanism return, slide block drives pre-forging mold return, completes pre-forging process;
2). finish-forging technique: pre-forging is put into finish-forging lower mode cavity, special forging equipment slide block drives finish-forging patrix to move fast and bed die carries out matched moulds, after matched moulds, voussoir clamping mechanism carries out locked mode, then left, You Liang electric screw mechanism drives left, right extrusion head applies the pressure towards die inside, in the process of extrusion blank medial launder, make blank be full of die cavity, obtain the balance shaft of heavy truck blank of non-trimming, then two electric screw mechanisms drive two extrusion head returns, voussoir clamping mechanism return, slide block drives finish-forging patrix return, complete whole forging processes.
The invention has the beneficial effects as follows: the present invention, in forging process, adopts special forging equipment, pre-forging is the blank matched moulds simultaneously that bends in blocker matched moulds process, closes jumping-up extruded after matched moulds by jumping-up drift; Finish-forging blank obtains after making blank be full of die cavity by left and right two pre-forging of extruding drift sealing extrusion after finisher matched moulds simultaneously, and forging process does not produce overlap, just can reduce raw material, reaches the object saved material with energy consumption; Apply forging method of the present invention and carry out the production of balance shaft of heavy truck blank, equipment investment can be made to save more than 80%, forging loss of weight about about 10%, save material cost about 30%.
Accompanying drawing explanation
Fig. 1 is the structure diagram of balance shaft of heavy truck.
Fig. 2 is the special forging equipment schematic diagram that the present invention relates to.
Fig. 3 is the special forging equipment right view that the present invention relates to.
Fig. 4 is the three-dimensional sketch of Preform Die of the present invention and blank.
Fig. 5 is the three-dimensional sketch of finish-forging die of the present invention and pre-forging.
Wherein: 1 is left column; 2 is left electric screw mechanism; 3 is left side small cylinder; 4 is left movable wedge; 5 is left fixing voussoir; 6 is main hydraulic cylinder; 7 is upper beam; 8 is right movable wedge; 9 is right fixing voussoir; 10 is slide block; 11 is right side small cylinder; 12 is right electric screw mechanism; 1201 is screw pair; 1202 is slide block; 1203 is flywheel; 1204 is motor; 1205 is one-level gear; 13 is right column; 14 is bottom knockout hydraulic cylinder; 15 is underbeam; 20 is blocking patrix; 21 is blocking counterdie; 22 is circle blank; 23 is left jumping-up extruding plug; 24 is right jumping-up extruding plug; 25 is pre-forging; 26 is finish-forging counterdie; 27 is finish-forging patrix; 28 is left extrusion head; 29 is right extrusion head.
Detailed description of the invention
As shown in Figure 1, be the structure diagram of balance shaft of heavy truck.
Special forging equipment as shown in Figure 2, comprise left column 1, right column 13, upper beam 7, underbeam 15, slide block 10, main hydraulic cylinder 6, bottom knockout hydraulic cylinder 14, left column 1, right column 13, upper beam 7, underbeam 15 form frame, slide block 10 is led on left column 1, right column 13 by guiding pair, main hydraulic cylinder 6 is arranged on upper beam 7, and main hydraulic cylinder 6 drives slide block 10; Bottom knockout hydraulic cylinder 14 is arranged on below underbeam, left column, right column is separately installed with left electric screw mechanism 2, right electric screw mechanism 12; Voussoir 5, right fixing voussoir 9 are fixed in the left side that is respectively equipped with above of slide block; Be provided with voussoir clamping mechanism below upper beam, voussoir clamping mechanism comprises left voussoir clamping mechanism, right voussoir clamping mechanism, and left voussoir clamping mechanism is made up of left side small cylinder 3, left movable wedge 4, and left side small cylinder 3 drives left movable wedge 4; Right voussoir clamping mechanism is made up of right side small cylinder 11, right movable wedge 8, and right side small cylinder 11 drives right movable wedge 8; The upper surface of left movable wedge 4, the upper surface of right movable wedge 8 are slidably matched with the lower surface of upper beam 7 respectively;
During use, slide block 10 moves down and puts in place, voussoir clamping mechanism locking sliding block, the tension force produced when overcoming forging and stamping; Left electric screw mechanism, right electric screw mechanism laterally realize crushing failure at high speed forging.
As shown in Figure 2 and Figure 3, in the present invention, the structure of left electric screw mechanism and right electric screw mechanism is identical, the structure of right electric screw mechanism is: by two motors 1204 through one-level gear 1205 power transmission to flywheel 1203, by flywheel 1203 again power transmission to screw pair 1201, again by screw pair 1201 power transmission to slide block 1202, thus realize the Power output of electric screw mechanism.
Bottom knockout hydraulic cylinder according to different products, can adjust angle of inclination.
The present invention adopt the major function of forging equipment to be as shown in Figure 2: slide block (or upwards) can carry out quick-make (or opening) mould vertically downward under the dynamic action of main hydraulic cylinder; After closed (or opening) mould, two oil cylinders on left and right two columns drive voussoir can snap in (or exiting) respectively and realize mould locking (or unblanking) between upper beam and slide block; After locking (or unblanking) mould, the active drift of two electric screw press structure bands of left and right transverse movement can carry out crushing failure at high speed forging (or returning); When needing to eject forging, material jacking mechanism according to different products, can adjust the angle of inclination of ejector beam.
In the present invention, the structure of described left electric screw mechanism and right electric screw mechanism is prior art, has two kinds of situations:
The first can be the screw conveyer of direct-drive electric screw press, comprises motor, by the screw rod on the flywheel of motor direct-drive, flywheel, the slide block that driven by screw pair by screw rod;
The second, can be through the screw conveyer of the electric screw press that one-level gear transmits, comprise multiple motor, the rotating shaft of multiple motor is fixed with travelling gear, travelling gear engages with the edge of flywheel, realizes power transmission; Screw rod is fixedly connected with flywheel, the slide block driven by screw pair by screw rod.
As shown in Figure 4, Figure 5, describe balance shaft of heavy truck forging process in detail: during production, the round blank 22 of heating is put into blocking counterdie 21 die cavity, special forging equipment (adopt the special forging equipment shown in Fig. 2) slide block drives under main hydraulic cylinder dynamic action vertically downward that blocking patrix 20 is mobile fast carries out press-bendings also matched moulds with blocking counterdie 21, when after the upper and lower mould matched moulds of blocking, after matched moulds, voussoir clamping mechanism carries out locked mode, now left and right two electric screw mechanisms promote left jumping-up extruding plug 23 fast, right jumping-up extruding plug 24 applies to carry out closed jumping-up extruding towards the power inside die cavity to blank, then electric screw mechanism drives two jumping-up drift returns, then voussoir clamping mechanism return, last slide block drives blocking patrix 21 return, complete blank pre-forging, obtain the pre-forging 25 of non-trimming, again pre-forging 25 is put into the die cavity of finish-forging counterdie 26, on the special forging equipment that another is identical with blocking, slide block is under large hydraulic cylinder dynamic action vertically downward, finish-forging patrix 27 is driven to close with finish-forging counterdie 26, after matched moulds, voussoir clamping mechanism snaps between upper beam and slide block to form finish-forging patrix 27, the locked mode of finish-forging counterdie 26, now left, You Liang electric screw mechanism promotes left extrusion head 28 fast, right extrusion head 29 applies towards the pressure of die inside fast to pre-forging 25, crushing failure at high speed goes out in the middle of blank makes blank be full of die cavity while grain, obtain the balance shaft of heavy truck blank of non-trimming, then two electric screw mechanisms drive two extrusion head returns, voussoir clamping mechanism return, and last slide block drives finish-forging patrix 27 return, realize the process of non-trimming forging balance shaft of heavy truck.
Claims (1)
1. the non-trimming forging method of a balance shaft of heavy truck, it is characterized in that: the structure of the special forging equipment related to is: comprise left column, right column, upper beam, underbeam, slide block, main hydraulic cylinder, bottom knockout hydraulic cylinder, left column, right column, upper beam, underbeam form frame, slide block is led on left column, right column by guiding pair, main hydraulic cylinder is arranged on upper beam, and main hydraulic cylinder drives slide block; Bottom knockout hydraulic cylinder is arranged on below underbeam;
Left column, right column are separately installed with left electric screw mechanism, right electric screw mechanism; The structure of left electric screw mechanism, right electric screw mechanism is identical, concrete structure is: give flywheel through one-level gear power transmission by two motors, give screw pair power transmission again by flywheel, then give slide block by screw pair power transmission, thus realize Power output;
Voussoir, right fixing voussoir are fixed in the left side that is respectively equipped with above of slide block; Be provided with voussoir clamping mechanism below upper beam, voussoir clamping mechanism comprises left voussoir clamping mechanism, right voussoir clamping mechanism, and left voussoir clamping mechanism is made up of left side small cylinder, left movable wedge, and left side small cylinder drives left movable wedge; Right voussoir clamping mechanism is by right side small cylinder; Right movable wedge composition, right side small cylinder drives right movable wedge; The upper surface of left movable wedge, the upper surface of right movable wedge are slidably matched with the lower surface of upper beam respectively;
During use, slide block moves down and puts in place, voussoir clamping mechanism locking sliding block, the tension force produced when overcoming forging and stamping; Left electric screw mechanism, right electric screw mechanism, laterally realize crushing failure at high speed forging;
The concrete steps of non-trimming forging are as follows:
1). pre-forging process: the round bar of heating is put into blocking counterdie die cavity, special forging equipment slide block drives pre-forging mold to move fast and counterdie carries out press-bending and matched moulds, and after matched moulds, voussoir clamping mechanism carries out locked mode; Then left and right two electric screw mechanisms drive left jumping-up to extrude plug, right jumping-up extruding plug applies to carry out closed jumping-up towards the power inside die cavity to blank and extruded blank blocking, form pre-forging, then two electric screw mechanisms drive two jumping-up plug returns, voussoir clamping mechanism return, slide block drives pre-forging mold return, completes pre-forging process;
2). finish-forging technique: pre-forging is put into finish-forging lower mode cavity, special forging equipment slide block drives finish-forging patrix to move fast and bed die carries out matched moulds, after matched moulds, voussoir clamping mechanism carries out locked mode, then left, You Liang electric screw mechanism drives left, right extrusion head applies the pressure towards die inside, in the process of extrusion blank medial launder, make blank be full of die cavity, obtain the balance shaft of heavy truck blank of non-trimming, then two electric screw mechanisms drive two extrusion head returns, voussoir clamping mechanism return, slide block drives finish-forging patrix return, complete whole forging processes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488798.3A CN105081157A (en) | 2015-08-12 | 2015-08-12 | Flange-free forging method of heavy-duty car balance shaft |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488798.3A CN105081157A (en) | 2015-08-12 | 2015-08-12 | Flange-free forging method of heavy-duty car balance shaft |
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| CN105081157A true CN105081157A (en) | 2015-11-25 |
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| CN201510488798.3A Pending CN105081157A (en) | 2015-08-12 | 2015-08-12 | Flange-free forging method of heavy-duty car balance shaft |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881438A (en) * | 2017-04-17 | 2017-06-23 | 辽宁五八内燃机配件有限公司 | Blank-making method and device are forged in a kind of large forgings |
| CN107570654A (en) * | 2017-10-16 | 2018-01-12 | 重庆能特机械制造有限公司 | A kind of balanceable shaft processing technique and its mould |
| CN109622854A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | A kind of band type groove loose tool and forging open die forging blank-making method |
| CN109967677A (en) * | 2019-04-17 | 2019-07-05 | 阮伟光 | A kind of forging method of metal parts processing mold and metal parts |
| CN115415745A (en) * | 2022-09-09 | 2022-12-02 | 江苏双环齿轮有限公司 | Production process of multi-step precision die forging of shafting containing holes |
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| US6324883B1 (en) * | 1998-02-03 | 2001-12-04 | Kongsberg Automotive Asa | Method and tool for formation of an enlarged end portion of a bar |
| CN201244649Y (en) * | 2008-09-02 | 2009-05-27 | 罗建国 | Metal closed forging press using mechanical locking mould |
| CN102189206A (en) * | 2011-03-01 | 2011-09-21 | 湖北巨力锻造有限公司 | Forging technology of cylinder lifting lug of automobile |
| CN102990957A (en) * | 2011-09-16 | 2013-03-27 | 麻城纳福传动机械有限公司 | Electric screw press |
| CN103551850A (en) * | 2013-11-14 | 2014-02-05 | 重庆应国机械制造有限责任公司 | Closed type extrusion forging technology of complete fiber single-throw crankshaft forge piece |
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2015
- 2015-08-12 CN CN201510488798.3A patent/CN105081157A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6324883B1 (en) * | 1998-02-03 | 2001-12-04 | Kongsberg Automotive Asa | Method and tool for formation of an enlarged end portion of a bar |
| CN201244649Y (en) * | 2008-09-02 | 2009-05-27 | 罗建国 | Metal closed forging press using mechanical locking mould |
| CN102189206A (en) * | 2011-03-01 | 2011-09-21 | 湖北巨力锻造有限公司 | Forging technology of cylinder lifting lug of automobile |
| CN102990957A (en) * | 2011-09-16 | 2013-03-27 | 麻城纳福传动机械有限公司 | Electric screw press |
| CN103551850A (en) * | 2013-11-14 | 2014-02-05 | 重庆应国机械制造有限责任公司 | Closed type extrusion forging technology of complete fiber single-throw crankshaft forge piece |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106881438A (en) * | 2017-04-17 | 2017-06-23 | 辽宁五八内燃机配件有限公司 | Blank-making method and device are forged in a kind of large forgings |
| CN107570654A (en) * | 2017-10-16 | 2018-01-12 | 重庆能特机械制造有限公司 | A kind of balanceable shaft processing technique and its mould |
| CN109622854A (en) * | 2018-12-11 | 2019-04-16 | 陕西宏远航空锻造有限责任公司 | A kind of band type groove loose tool and forging open die forging blank-making method |
| CN109967677A (en) * | 2019-04-17 | 2019-07-05 | 阮伟光 | A kind of forging method of metal parts processing mold and metal parts |
| CN115415745A (en) * | 2022-09-09 | 2022-12-02 | 江苏双环齿轮有限公司 | Production process of multi-step precision die forging of shafting containing holes |
| CN115415745B (en) * | 2022-09-09 | 2024-01-26 | 江苏双环齿轮有限公司 | Production process of multi-step precision die forging with hole shafting |
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